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\bibitem{ATLASCollaborationAad_etal2011} ATLAS Collaboration(Aad, G. et al), Amoros, G., Cabrera Urban, S., Castillo Gimenez, V., Costa, M. J., Escobar, C., et al. (2011). Search for Diphoton Events with Large Missing Transverse Energy in 7 TeV Proton-Proton Collisions with the ATLAS Detector. \textit{Phys. Rev. Lett.}, \textit{106}(12), 121803--19pp.

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